This wikiHow teaches you how to delete a video from your Vimeo account on a computer.
Steps

Step 1. Go to https://www.vimeo.com from a browser
If you have not yet signed in to your account, click the Sign in button in the upper left corner of the screen and then select the method to sign in.

Step 2. Click My Videos
It's below the “Welcome” message in the top center of the screen.

Step 3. Click the gear icon on the video you want to delete
It's in the upper-left corner of the video preview.

Step 4. Click Video File
It's in the left column, near the middle of the menu.

Step 5. Click Delete this video
It's the red button near the bottom of the “Video File” screen. A confirmation message will appear.

Step 6. Enter your Vimeo password
This action will confirm your account.

Step 7. Click Delete
This will remove the video from the Vimeo servers.